A force causes an object to undergo a specific change. Unbalanced forces cause changes in speed, shape or direction. Gravitational forces act between masses. Friction opposes motion.
What is a force?
Which force did Charles-Augustin de Coulomb first describe?
What does Newton's First Law of Motion state?
What are the units of force?
Newton's Second Law of Motion can be summarised by which equation?
What is friction?
How do you calculate resultant force?
What happens if the resultant force on a car is in the direction in which it is travelling?
What is the gravitational field strength of the Moon?
If a person has a weight of 600 N, how much will they weigh on the Moon?